Home / 1,971.92-2,721.50-1,132.76

Finding the Fourth Proportional to 1,971.92, 2,721.50 and 1,132.76

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Solution

The fourth proportional to 1,971.92, 2,721.50 and 1,132.76 is: 1,563.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.92 : 2,721.50 = 1,132.76 : x
  2. Step 2: Convert to fraction form
    1,971.92/2,721.50 = 1,132.76/x
  3. Step 3: Cross multiply
    1,971.92x = 2,721.50 × 1,132.76
  4. Step 4: Simplify right side
    1,971.92x = 3,082,806.34
  5. Step 5: Solve for x
    x = 3,082,806.34/1,971.92
  6. Step 6: Final answer
    x = 1,563.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.